Cream-separator



W. G. COOTE. CREAM SEPARATOR.

APPLICATION FILED JAN. 7, 1920 Patented May 241, 1921.

W W a i UNITED STATES PATENT OFFIQE.

WILLIAM GORDON QUOTE, OF EAST KATANNING, WESTERN AUSTRALIA, AUSTRALIA To all whom it may concern.

Be it known that 1, WILLIAM GORDON Coors, a subject of the King of Great Britain, and residing at East Katanning, lVestern Australia, Commonwealth of Australia, have invented certain new and useful Improvements in Cream-Separators, of which the following is a specification.

This invention relatesvto cream separators, and its object is to attain certain economic and commercial and other advantages in the working and use of said separators.

One of the chief advantages of this invention resides in effecting a perfect uniformity or regular and even density of cream at all speeds, that is either at a low, medium, or high speed. Furthermore, at all speeds and capacities all waste of cream is prevented, and the skimmed milk is discharged in an impoverished condition and destitute of cream, and irrespective of variation of type, speed or capacity of the separator, and which capacity may be increasable or decreasab'le as desired by the operator. To attain such result the feed supply of the milk is automatically governed and regulated in mutual agreement with the speed of the separator by means of an air suction device hereinafter described. The invention also comprises means whereby the cream is aerated, and animal or other objectionable odors, taints or flavors are removed and eliminated. The invention also further comprises means whereby the cream is cooled in its chamber by a cold water jacketed wall against which the cream is thrown or makes contact prior to its final exit. With these and other related objects in view myinvention consists of the peculiar construction and operative combination of parts, and members and their novel combination and use will now be fully explained with the aid of the attached drawings wherein Figure 1 is a sectional elevation showing the application of my improvements to a cream separator, and in said view the eX isting parts of the separator are denoted by broken lines, also other parts thereof are removed for sake of clearness. Fig. 2 is an enlarged sectional elevation showing the automatic milk feed valve device in its normal position. Fig. 3 is a similar view showing a conical form of valve. Fig. 4 is a plan view on line 0c-m of Fig. 2. Figs. 5 and 6 are respectively elevation and plan views of the air suction device.

Specification of Letters Patent.

Application filed January '7, 1920. Serial No.

CREAlaI-SEPARATOR.

Referring to said drawings a is the ordinary float chamber positioned at the head of the separator, and from which the milk flows by gravity down through the outlet tube a lnto the cup or receiver 6 leading to the head of the lower pipe 6 which latter directly feeds the milk into the usual rotatlng bowl 0 in which the milk is centrifugally treated, and the cream separated therefrom 1n the well known manner-the skimmed milk passing out through chamber 0 and spout 0 while the cream passes out through chamber (Z and spout (Z in ordinary manner. In the'outlet tube a an inner tubular valve 6 is adapted to telescope and vertically work, see Figs. 2 and 3said valve tube 6 is open at its top, and is made with the milk outlet port 6 of a taper or graduated and curved shape, and section as shown and positioned and arranged in such manner that as the speed of'the separator increases the area of exposure of said port 6 will also increase therewith, and consequently allow of an increased volume of milk to flow into the separator bowl 0. The annular outlet space between the tubes a and e is always open, while the port 6 acts as an auxiliary outlet for the increased volume of milksaid port does not become operative until it comes in line with and belowthe bottom edge a of the outer tube a This valve tube 6 at its closed bottom terminal is thereat connected with the inverted cup 9 formed with the top inlet milk holes 9 see Fig. 4lsaid cup is freely and removably held in position within the air operated piston is by the outwardly directed spring legs 7', which latter at their extremities engage within the retention bead or recess 7' formed in the piston 70 on the pipe 6 and by said legs j the valve 6 is held in position during its functions and movements.

The object of having the port 6 of a curved and graduated shape is to permit of the escape therethrough of a larger quantity of milk than would otherwise be permissible by the increased speed of the separator, as I have found in practice that the capacity and speed do not maintain a constant ratio or roportion with each other.

s seen in Fig. 3, the milk valve is made of a cone shape as f and which shape permits of the easy cleaning of the valve, said cone may be either of a straight or curved form.

n the lower feed pipe 5 is operatively carried an air piston 70 working in its cylin- 'from all objectionable odors or taints. peripheral space around the air piston- 7a is determined upon in order to provide suf der 70 which latter is open at the top and bottom. This air piston is by its movement 'causes the fall or rise of the thereon carried milk outlet valve 6, and consequently exposes or closes the port 6 governing the 1ncre ased outlet of the milk. The minimum quantity of milk escapes through the always open annular space provided therefor between the tube a and the tubular valve 6,

and it is apparent that upon the exposure or closure of said outlet port 0 either below or above the bottom edge a of the milk outlet tube a it will consequently control and govern the supply of the milk over and above the minimum quantity above mentioned. The air piston 70, is operatively connected by the forked link on to an arm m 'pivotally swung by hook m to the underside of the float chamber rasaid arm;

'The initial means for governing the supply of milk consists of a ran bladed device p which is removably secured by'its tubu lar tapered hub or stem p to the rotatable bowl 0 or other rota-table member of the separator. The object of'tapering the tubular stem 32 is to provide an inclined wall to compel the down flow of any milk which may be thrown against same from the tube 5 This fan pacts as the air feed agent for working the piston is,

and also for aerating the cream; The air to the fan p passes downwardly around the air piston. and into the "cream chamber d, and finally out through said chamber dand spout al and by and during its travel. it aerates and purifies the cream and trees it ficient air feed space for the rotation of the fan and when such air feed becomes in- The sufiicient owing to the increased speed of the fan and separator the piston k is caused to descend, and thereby open the milk outlet port- 6 On the exit mouth of the cream spout d is adj ustably fitted the baflie plate 1" whose purpose is tobaflie any portion of the cream whichwould otherwise escape in the form of spray, owing to the air blast from the fan p. 7

The cream chamber d and its spout d as shown in Fig. 1, are made of a double walled or jacketed construction as r into which hollow space thereby provided the cooling water is fed from any suitable'high level source through inlet pipe 8, and passing out through the overflowpipe as, thereby maintaining a complete circulation. o'f 'cooling water to said cream chamber (Z and its spout (Z 7 r a A further structural feature of my invention resides in the provision made for the outlet of the skimmed milk from thebowl "csaid outlet being positioned on a peripheral line with that of saidbowl by means of an extension tube 7 attached thereto, see

Fig, 1. It is obvious that the mouth of said tube 3/ rotates at the same peripheral speed as that of the maximum diameter of the bowl 0, with the result that there isno retardation ofthe outlet of the skimmed milk therefrom, which at present occurs with bowls of existing formations.

hat I clalm asmv invent on and desire to secure'by Letters Patent 1s':

' Incream separators, the combination with the cream chamber and an outlet spout connectedthereto, of means for cooling said chamber and spout consisting of an outer jacketed wall surrounding said chamberand spout,an inlet pipe'for connecting a-high leveliwater source to said jacket, and an outlet pipe connected to the'jacket, whereby a constant flow of coolingwater-about the cream chamber and spout is maintained.

In testimony whereof I have hereunto set my hand in presence'ofltwo' subscribing witnesses. 7

WILLIAM GORDON COOTE; Witnesses: l o

BEATRICE HoRsBuRGH', REGINALD OVERINGTON. 

